Alexander Graham Bell (1847 - 1922)

Alexander Graham Bell is most documented for inventing the phone.  He came to the U.S as a lecturer of the deaf, and formed the concept of "electronic speech" whereas visiting his hard-of-hearing mother in North American country. This semiconductor diode him to create the mike and later the "electrical speech machine" -- his name for the primary phone.


Bell was born in Edinburgh, Scotland on March three, 1847. He registered within the University of London to check anatomy and physiology, however his faculty time was curb once his family moved  to North American country in 1870.  His oldsters had lost 2 kids to TB, and that they insisted that the simplest thanks to save their last kid was to go away England.

When he was eleven, Bell made-up a machine that would clean wheat. He later same that if he had understood electricity in any respect, he would are too discouraged to create the phone. everybody else "knew" it had been not possible to send voice signals over a wire.

While attempting to good a way for carrying multiple messages on one wire, he detected the sound of a plucked spring on sixty feet of wire during a Bean Town electrical look. Thomas A. Watson, one in all Bell's assistants, was attempting to activate a telegraph transmitter. Hearing the sound, Bell believed that he might solve the matter of causation a personality's vocalization a wire. He found out the way to transmit a straightforward current 1st, and received a patent for that invention on March seven, 1876. 5 days later, he transmitted actual speech.  Sitting in one area, he spoke into the phone to his assistant in another area, locution the currently noted words: "Mr. Watson, come here.  I need you." the phone patent is one in all the foremost valuable patents ever issued.

Bell had alternative inventions also -- his own residence had a precursor to modern-day air-con, he contributed to aviation technology, and his last patent, at the age of seventy five, was for the quickest hydrofoil however made-up.

Bell was committed to the advancement of science and technology. in and of itself he took over the presidency of alittle, virtually unknown, scientific society in 1898: the National Geographic Society.  Bell and his relative-in-law, Gilbert Grosvenor, took the society's dry journal and added  lovely images and fascinating writing -- turning National Geographic into one in all the world's known magazines. He is also one in all the founders of Science magazine.

Bell died on August two, 1922.  On the day of his burial, all telephone company within the US was stopped for one minute in his honor.